Face mask



FIG. 1 is a perspective view of a face mask showing my new design;

FIG. 2 is a top plan view thereof; and,

FIG. 3 is another top plan view thereof, the bottom plan view being a mirror image thereof.

The broken lines showing of a human head are shown for illustrative purposed and form no part of the claimed design. 

CLAIM The ornamental design for a face mask, as shown. 